A Hanbok (South Korean) or Joseon-ot (North Korean) is a traditional Korean dress for semi-formal or formal attire during traditional occasions such as festivals, celebrations, and ceremonies. It is characterized by vibrant colors and simple lines without pockets. Although the term literally means "Korean clothing", hanbok usually refers specifically to clothing of the Joseon period. Korea had a dual clothing tradition in which rulers and aristocrats adopted different kinds of mixed foreign-influenced indigenous styles while commoners preserved a distinct style of indigenous clothing, today known as Hanbok.